Doctors and psychiatrists have long debated whether there is a link between infections and certain psychiatric disorders, including OCD. Over the past few years, the notion has been earning more recognition in the scientific community—and resources, including clinics to treat patients and run trials.

Drew Altman: The Bureau of Economic Analysis has made health spending more comprehensible by analyzing health spending and price growth by common diseases and diagnoses such as cancer, heart disease, diabetes, and even the common cold.